This is a strange one: LOT reports a 'central hydraulic system' failure, yet the post-touchdown photographs clearly show the flaps deployed, spoilers deployed and flight controls functioning with elevator surfaces deflected at nearly full 'nose up' position??
NO NO NO. This is
NOT strange in the slightest.
-Flaps and slats have alternate electric function.
-ONLY the spoilers operated by the
LEFT and
RIGHT hydraulic system are deployed. The spoilers powered by the Centre hydraulic system remain stowed.
-Elevators function just fine from
either left, centre or right hydraulic system alone. (Just to be clear - you can lose 2 of the 3 hydraulic systems and elevators and rudder operate 100% normal - there is TRIPLE hydraulic system redundancy for these control surfaces.) (DUAL redundancy for ailerons)
If it happens that you have absolutely no idea about the technical details of a particular aircraft - this is the time you pose a simple question such as
"Is it possible that the flaps/slats can extend, SOME spoilers may deploy and other control surfaces remain operative with a centre hydraulic system failure on a 767 ?"
Answer
YES